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I need this done in about a day. The attachment below is the word document of the lab. Please send me it back in the same word document. Thank you very much. No Plagiarism.
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Explanation & Answer
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EXPERIMENT: CRYSTALLIZATION and IDENTIFICATION of COMPOUND X
20 Points
1. What is the purpose of crystallization? (1 point)
To purify organic or inorganic compounds by taking advantage of its solubility in a given solvent
at different temperatures. The impurities either stay dissolved or are easily decanted while the
compound slowly crystallize out of the solution.
2. What type(s) of compounds can be recrystallized? Circle your answer. (1 point)
A.
B.
C.
D.
E.
Liquids
Gases
Solids
Liquids and Solids
Liquids, Solids and Gases
3. A student needs to perform a recrystallization on Compound X using one of the
following solvents. Use the data below to help the student select a solvent for
recrystallization. Which solvent should the student select? (1 point)
Toluene
or
Ethyl Acetate
or
Water
Solubility of X at 25 oC
Solubility of X at 40 oC
Toluene 5 mg/mL
Toluene 7 mg/mL
Ethyl Acetate 5 mg/mL
Ethyl Acetate 60 mg/mL
Water 210 mg/mL
Water 220 mg/mL
4. Explain why the solvent you chose for Compound X is the best. Why are the other
solvents not suitable? (2 points)
The best solvent is that at which the solubility is very low at low temperatures but very soluble at
high temperatures. Toluene has a very low solubility at both low and high temperatures while
water has a high solubility at both. The ideal solvent is then ethyl acetate given that at low
temperature the solubility is just 5 mg/mL and at high temperatures it increases 12 times.
5. How would the purity of Compound X be impacted if some of the impure Compound X
did not dissolve while the solution was heated during the recrystallization process? (1
point)
It would be affected greatly since the pure compound X would begin to crystallize around the
impure crystals at lower temperatures. After heating it, the solution should not have any insoluble
particles.
6. What would happen if too much solvent is used to dissolve impure Compound X? (2...